"Every time I talk about it, I get tears in my eyes," said PTA President Anastatia Davis-John, whose son is in fourth grade. "It's a big problem for parents. There's room in the schoolyard for an extension. Why can't we get one?"

Advocates believe the schoolyard is big enough for a building expansion that could bring all 775 kids under one roof.

The problem has not been resolved, and parents grew concerned last year when the city's PlaNYC initiative suggested the school's yard might make a nice park.

Davis-John said parents hate putting their young kids on a bus to the annex every day and believe the trailers, which house fifth-graders and science labs, are substandard.

Assemblyman Nick Perry says splitting children between buildings creates a logistical nightmare for parents. "Families in my district suffer because it creates an inconvenience," he said. "It's been going on for a long time, and my feeling is the DOE thinks it's not urgent."